Acetylene-gas lamp.



F. E. BALDWIN.

AOETYLENE GAS LAMP.

APPLICATION FILED JULY'30, 1912.

Patented Nov. 4; 1913.

COLUMBIA PLANOGRAI'H cu., WASHINGTON, I:v c.

UNTTED STATES PATENT OFFICE.

FREDERIC E. BALDWIN, OF NEW YORK, N. Y.

AoE TYLENE-eAs LAMP.

To all whom it may concern: 7

Be it known that I, FRnnnRIo E. BALDWIN, a citizen of the United States, residing at New York, county of New York, and State of New York, have invented certain new and useful Improvements in Acetylene-Gas Lamps, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements in acetylene gas lamps.

In portable acetylene gas lamps now widely used the gas i supplied to the burner under considerable water pressure and the orifice in the burner is necessarily of very small diameter, the size of the orifice seldom exceeding, say, about .015, and in many cases being much smaller. The conditions of use, particularly in portable lamps which are subjected to comparatively severe shocks or jars, cause particles of carbid dust to flake off from the carbid and these particles are suspended in the gas and carried through the gas duct to the burner, thereby causing the burner to clog. To prevent this, such lamps are provided with some form of strainer through which the gas passes, the strainers most usually used consisting of pieces of felt or cotton wool. Such strainers tend to clog up, especially when wet, so that the gas does not pass readily through, rendering the lamps ineflicient, and also making it necessary to frequently change the strainers.

It is the object of this invention to produce an improved acetylene gas lamp in which the gas duct is constricted in such a way as to prevent the passage of carbid particles or dust which would tend to clog the burner and which prevents the ready passage of gas, and in which the difliculties due to clogging are overcome.

With this and other objects not specifically referred to in view, the invention consists in certain constructions, and in certain parts, improvements and combinations as will be hereinafter fully described and then specifically pointed out.

Referring to the accompanying drawings: Figure 1 illustrates in cross section a portable acetylene gas lamp constructed in accordance with the invention. Fig. 2 is a section on the line 2 2 of Fig. 1.

Referring to the drawings which illustrate one embodiment of the invention, 1

Specification of Letters Patent.

Application filed July 30, 1912.

.tainer.

Patented Nov. 4., rats.

Serial No. 712,279.

indicates the carbid container of a portable acetylene lamp and 2 the water tank, a gas tight joint between the carbid container and the water tank being secured by a gasket 3 located between these parts. The water tank has a pipe 4 depending therefrom, which as illustrated is secured to its top. This pipe extends into a collar 5 struck up from the bottom of the carbid container. The lower end of the pipe 4: is threaded and receives a screw plug 6, the head 7 of this plug being larger than the orifice through which the pipe, extends. A gasket 8 surrounds the plug. When the plug is in position and screwed down tight the water tank and carbid container are efiiciently held together, the gaskets being placedunder proper compression to insure tight joints. As illustrated, the pipe 4: is provided with a valve seat 9 controlled by a valve 10 which is tapped through a plug in the upper end of the pipe. The pipe is also provided with inlet openings 11 and outlet openings 12 to permit the flow of water through the pipe into the carbid con- The gas duct, in the particularlamp illustrated, consists of a pipe 13 passing through the water tank, a burner tube 14: and a burner pillar 15, the pillar being provided with the usual lava tip 16, this tip having two small orifices.

Lamps embodying the invention will include a movable constrictor located in the gas duct, said constrictor being of such size that the distance from its surface to the wall of the duct will be insufiicient to permit the passage through the duct of any particles of carbid. Such constrictors will also be made movable and accessible from the outside of the lamp, so that the tube may not become choked with particles of carbid. In the particular construction illustrated, the burner tube 14 is formed to provide a plug 18 having an orifice 19 therethrough, this plug, being also threaded and serving to attach the burner tube to the pipe 13. The constrictor is formed by a rod 20 extending through the orifice 19, this rod being carried by a plug 21 threaded into a boss 22 formed on the burner tube. As has been indicated, the size of the rod is such that the distance between the surface of the rod and the interior wall of the orifice through the plug is such that particles of carbid dust which would tend to choke the orifices in the burner cannot pass through the orifice 19. As illustrated, the distance from the surface of the rod to the interior wall of the orifice 19 is less than the diameter of the orifice in the burner.

It has been found in practice that the construction which has been described efficiently prevents the passage of such particles of carbid as would tend to choke the burner, and if such particles of carbid tend to clog in and choke the orifice 19 they may readily be removed by giving the screw plug which ticular construction herein shown and de- 20 scribed.

What is claimed is t a 1. In a portable. acetylene gas lamp, the combination with the water tank and a carbid reservoir, of a gas duct leading from the reservoir, a burner with which the duct communicates, and a movable constrictor located in the duct and accessible from the exterior of the lamp, the constrictor being of such size with respect to the size of the duct as to prevent thepassage therethrough of particles of carbid dust which will not pass through the burner orifice.

2. In a portable acetylene lamp, the combination with a water-tank and carbid reservoir, of a gas duct leading to the reservoir, a burner with which the duct communicates, and a movable constrictor located in the duct, the distance between the surface of the constrictor and the wall of the duct being less than the diameter of the orifice in the burner.

3. In a portable acetylene gas lamp, the combination with a water tank and a carbid reservoir, of a gas duct leading from the reservoir, a burner with which the duct communicates, a plug, and a constrictor carried by the plug and extending into the duct, the constrictor being of such size with respect to the size of the duct as to prevent the passsage therethrough of particles of carbid dust which will not pass through the burner orifice.

4. In a portable acetylene gas lamp, the combination with a water tank and a carbid reservoir, of a gas duct leading from the.

reservoir, a burner with which the duct communlcates, a plug, and a rod carried by the plug and extending into the duct, the distancebetween the surface of the rod and the Wall of the duct being less than the diameter of the orifice in the burner.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses.

FREDERIC E. BALDWIN.

Witnesses:

A. WHITE, T. F. KEHOE.

Copies of this patent may be obtained for five .cents each, by addressing the Commissioner of Patents. Washington, D. C. 

